CloudScape ver. 3.5

Does anybody have any idea where I can get the old Informix CloudScape ver 3.5. I need it for a CIW Database Specialist certification training course that is greatly outdated from CIW. The course book covers JDBC with Java 1.3.1 and the cloudscape database of which I have only found the old java version. Any help finding this program would be greatly appreciated.. I know that IBM release a version 10.1 but I have to have 3.5 due to some driver changes.